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Pump and Windmill Connection

Description: Patent for a connection between a pump and a windmill which varies the speed of the stroke.
Date: July 22, 1913
Creator: Slover, James S.
Partner: UNT Libraries Government Documents Department

Dental Appliance.

Description: Patent for a dental appliance attachment for a dental engine.
Date: December 9, 1913
Creator: Ballenger, Curtis M.
Partner: UNT Libraries Government Documents Department

Attachment for Lathes.

Description: Patent for an improved attachment for lathes and (more specifically) as a cutting attachment for a jeweler's lathe.
Date: November 18, 1913
Creator: Norton, Walter S.
Partner: UNT Libraries Government Documents Department
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